日本宇航员太空疯长身高，人类可以不去太空就借助失重长高吗

1月9日，正在国际空间站工作的日本宇航员金井宣茂在推特发文说，自己在太空生活三周，身高长了9厘米。 航天专家称，在失重环境下，人类的身高的确会增加，但通常只增加1至2厘米，9厘米的增幅很不寻常。

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